201216520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{122693}}^1$

素因数の和:122745

約数の個数: 32

約数和(自身を含む): 463783320

約数和(自身を除く): 262566800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 122693, 245386, 490772, 613465, 981544, 1226930, 2453860, 4907720, 5030413, 10060826, 20121652, 25152065, 40243304, 50304130, 100608260, 201216520]

約数ペア:

[(1, 201216520), (2, 100608260), (4, 50304130), (5, 40243304), (8, 25152065), (10, 20121652), (20, 10060826), (40, 5030413), (41, 4907720), (82, 2453860), (164, 1226930), (205, 981544), (328, 613465), (410, 490772), (820, 245386), (1640, 122693)]